Ironclad Warlord wrote:He changed completely, before he never wanted anything to do with the Mafia, then his dad gets shot because of his involvement in organized crime and suddenly his son decides he wanted to be godfather. Its almost as bad as the character transformation in American History X.
To repeat myself, being in the mafia or a soldier or whatever else is all surface stuff, what Michael really was as a person, intelligent, calculating and loyal to his family, that all remained the same. It just the circumanstances that dictated he use his talents in a different way.
Nor did Michael 'decide' he wanted to be Godfather after his dad was shot. Sonny assumed control, and Michael remained outside the family business.
Michael then volunteered himself to assassinate the family rival and police chief in the restaurant, not out of any ambition to rise up in the mafia, but simply because the family needed to retaliate after what had been done to them. Michael was in hiding when Sonny was killed, and assumed a place by his father's side on his return.
And that's the actual change. Before the mafia war, Vito's plan had always been for Michael to rise to some kind of legitimate power, but now with Sonny murdered, Fredo useless and the family's enemies actively plotting against them, Vito began grooming his son for the role.